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A long cycle-life high-voltage spinel lithium-ion battery electrode achieved by site-selective doping

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dc.contributor.authorLiang, G.
dc.contributor.authorWu, Z.
dc.contributor.authorDidier, C.
dc.contributor.authorZhang, W.
dc.contributor.authorCuan, J.
dc.contributor.authorLi, B.
dc.contributor.authorKo, K.-Y.
dc.contributor.authorHung, P.-Y.
dc.contributor.authorLu, C.-Z.
dc.contributor.authorChen, Y.
dc.contributor.authorLeniec, G.
dc.contributor.authorKaczmarek, S.M.
dc.contributor.authorJohannessen, B.
dc.contributor.authorThomsen, L.
dc.contributor.authorPeterson, V.K.
dc.contributor.authorPang, W.K.
dc.contributor.authorGuo, Z.
dc.date.issued2020
dc.description.abstractSpinel LiNi₀.₅ Mn₁.₅ O₄ (LNMO) is a promising cathode candidate for the next-generation high energy-density lithium-ion batteries (LIBs). Unfortunately, the application of LNMO is hindered by its poor cycle stability. Now, site-selectively doped LNMO electrode is prepared with exceptional durability. In this work, Mg is selectively doped onto both tetrahedral (8a) and octahedral (16c) sites in the Fd 3‾ m structure. This site-selective doping not only suppresses unfavorable two-phase reactions and stabilizes the LNMO structure against structural deformation, but also mitigates the dissolution of Mn during cycling. Mg-doped LNMOs exhibit extraordinarily stable electrochemical performance in both half-cells and prototype full-batteries with novel TiNb2 O7 counter-electrodes. This work pioneers an atomic-doping engineering strategy for electrode materials that could be extended to other energy materials to create high-performance devices.
dc.description.statementofresponsibilityGemeng Liang, Zhibin Wu, Christophe Didier, Wenchao Zhang, Jing Cuan, Baohua Li, Kuan-Yu Ko, Po-Yang Hung, Cheng-Zhang Lu, Yuanzhen Chen, Grzegorz Leniec, Sławomir Maksymilian Kaczmarek, Bernt Johannessen, Lars Thomsen, Vanessa K. Peterson, Wei Kong Pang, and Zaiping Guo
dc.identifier.citationAngewandte Chemie International Edition, 2020; 59(26):10594-10602
dc.identifier.doi10.1002/anie.202001454
dc.identifier.issn1433-7851
dc.identifier.issn1521-3773
dc.identifier.orcidLiang, G. [0000-0002-2302-4932]
dc.identifier.orcidGuo, Z. [0000-0003-3464-5301]
dc.identifier.urihttp://hdl.handle.net/2440/130854
dc.language.isoen
dc.publisherWiley
dc.relation.granthttp://purl.org/au-research/grants/arc/FT160100251
dc.rights© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
dc.source.urihttps://doi.org/10.1002/anie.202001454
dc.subjectHigh energy density; lithium-ion batteries; long cycle life; site-selective doping; spinel cathodes
dc.titleA long cycle-life high-voltage spinel lithium-ion battery electrode achieved by site-selective doping
dc.typeJournal article
pubs.publication-statusPublished

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